Fan attachment for carriages



- Much 2,1926. 1,575,202

s. HAVLM) nu nncrnfn'r fmi("cmuzmmsv Filed April 18. 1925 g sheets-sheet 1 March 2 1926. 1,575,202

S. HALMI FAN ATTACHMENT FR CARRIAGES Filed April 18. 1925 2 Sheets-Sheet 2 Patented Mar. 2, 1926.

` UNiTEDfsTATEs-i PATENT OFFICE.

STEVE HALMI, oF YoNinns, NEW YORK.

FAN ATTACHMENT Fon cannons.

Application led April 18, 1925. Serial No. 24,101.

provide a fan attachment for carriages char-l acterized by the driving of the fan blade by means of power transmission mechanism adapted to beselcctively connected to one of the ground engaging wheels of the carriage. i

A further object of the invention is to vpro-` vide novel means'for permitting the connecting and disconnecting of the above re; feried to power' transmission mechanism to the said groundengaging wheel.

Other lobjects and advantages j ofI the invention will be apparent during the course of the following description; Y

In the accompanying drawings formingV a part of this specification and in which like numerals are employed to designate like parts throughout the` same, Figurel isa side elevational view of the carriage, shown in dotted lines, with the fan attachment ,embodying this invention kproperl `mountedthereon,y a

Figure` 2 isa verticalsectional view of a carriage shown iny Fig. 1 and illustrates the entire fan attachment inv elevation, n i

Figure 3 is a top plan'viewI of thefan portionof the structure shown in 1 and2,V

Figure 4 isa sideelevational -view of the structure shown in Fig. 3, y Figure 5 vis a fragmentary elevational view of the device showny inFig.; 2- and clearly illustrates the mechanism employed for permitting the fan v.driving means to be selectively connected `or disconnected with its driving means, y f f Figure 6 is iin-elevational view` of the structure shown in Fig.y 5, rand taken -at right angles in respect to the showing in this figure,` y

Figure 7 is a vertical sectional view of the mechanism shown in, Figs. 5 andv 6,

Fi re'S is a fragmentary vertical sectiona view of a friction wheel and flexible shaft connection shown in Figs. 5 to 7 in-` elusive,

Figure 9 illustrates in vertical section a bevel gear connected to the opposite -end of `the flexible shaft shown in Fig. 8,

Figure 1() shows partly in elevation and partly in vertical section the mounting for the fan blades,

Figure 11 is a fragmentary elevational view, partly in section, of a portion of the mechanism shown in section in Figs. 6y and 7, and l Figure 12 illustrates in elevation a one-` way acting clutch element associated with the friction wheel shown in Figs. 5 and 8.

In thel drawings, wherein for the purpose of illustration is shown a preferred embodiment ofk this invention, the numeral 5 designates a carriage body liavingmounted there` on the pivotally movable top 6 which is intended to have lsuitably fastened to the innerk face of the upper portion of the saine the spider 7. This spider acts as the mounting for the fan blades whichincludes a spindle 8 threaded at its upper end: 9, -see Fig. 10, for being received within the aperture 10 formed in the hub portion of the spider 7 This spindle 8 is shown iii Fig. 10 as having a reduced trunnion 11 upon which is mounted the hub 12 which carries the fan blades 13. This hub 12 is provided with ball bearing races 14 within which the ball bearings 15 are located. The extreme end ofthe spindle 8 is reduced and externally screw threaded at 16 for receiving the binding nut 17 which holds the fan blades and their hub in place. The hub 12 has formed integrally therewith a bevel gear 418, the purpose of whichwill'be disclosed at a later point. The Vspider' 7 vhas Vsuitably fastened thereto the protector frame 19, clearly illustrated in Figs. 1 to 4 inclusive. i The spider 7 has suitably connected to or formed integrally with 'one of its arms a bearing bracket 20 having mounted therewithin the bearing bushing 21 which is held against rotationby the set screw 22, see Fig. 9. This bearing bushing 21 hasv journaled therein the stub shaft 23 `which 'has rigidly mounted upon one projecting end a bevel gear 24 shown in Figs. 2 and 4 asmeshing -withthe bevel gear portion. 18 kcarried by the fan hub12. 1..

The stub shaft 23Vhas an annular Harige 25` formed adjacent its opposite end which lllI prevents the withdrawal of the said shaft from the bearing bushing 21 toward the side where the bevel gear 24 is located. This flanged end of the stub shaft 23 is provided with a bore 26 into which rojects a flexible shaft 27 which is suitably fastened in said bore. This flexible shaft 27 is surrounded by a suitable flexible casing 28 which extends with the shaftv inthe manner illustrated in Figs. 1 and 2 to terminate atI their lower' ends in close proximity to the ground engaging wheel 29 of the carriage body 5. rThe flexible casing and shaft 28 and 27 respectively are suitably supported at desired intervals by the mounting straps 30 which are fastened to the carriage body 5.

The opposite ends of the shaft and casing 27 and 28 respectively are shown in Fig. 8. The shaft end is received in the bore 31 formed in one end of the stub shaft 32 which is Vjournaled in the bearing bushing 33 clamped between the adjustable parts 34 of a two-part mounting which will be described in detail at a later point. This stub shaft 32 is provided with a flange 35 for preventing` outward movement of the stub shaft away from the flexible shaft 27. The opposite projecting end of the stub shaft 32 has fastened thereto the element 36 of a one-way acting clutch structure which cooperates with the opposed clutch structure 37 formed integrally with the hub 38 of the friction wheel 39 having mounted on its periphery the rubber tire 40. This Wheel 39 is longitudinally movable and is normally held in position for causing its clutch struc- -ture 37 to operatively cooperate with the clutch structure 36 for providing a connection between the wheel 39 and the stub shaft 32. The spring 41 is intended to maintain these clutch structures 36 and 37 in operative relation and is held in place by the washer 42 which is retained upon the end of the stub shaft by the nut 43.

The mounting members 34 for the bearing bushing 33 are carried by the plunger 44 which extends into the cylinder 45 through the packing nut 46. The lower end of this plunger 44 has threaded thereon the nut 47 which is employed for retaining in place the spring 48 which bears at its upper end against the inner end of the packing 46 and at its lower end against the nut 47 for functioning to move the plunger 44 downwardly through the cylinder 45. This cylinder 45 has a slot 50 formed in one side through 4which projects the operating handle 51 of a cam 52 which is pivoted on the pin 53. This cam 52 functions to force upwardly upon the plunger 44 for compressing the spring 48.v The lower end of the cylinder 45 is formed substantially solid, as at 54, and is provided with a threaded bore 55 which adjustably receives the threaded stem 56 'carried by the jaw 57 which has adjustable thereon a second clamping jaw 58. The threaded member 56 is held in any desired adjusted position by the lock nut 59.

It will be seen, by inspecting Figs. 2 and 5 to -7 inclusive that the jaws 57 and 58 are employed for clamping therebetween the supporting axle 60 for the ground engaging wheel 29 and are intended to support the cylinder 45 and its associated elements in such a manner that the friction wheel 39 will 7 the friction wheel 39 to rotate and the clutch elements 36 and 37 will cooperate for connecting the hub 38 of the wheel 39 to the stub shaft 32. Rotation of the stub shaft 32 will cause the flexible shaft 27 to rotate for causing similar rotation of the stub shaft 23 connected to its opposite end and the bevel gear 24 carried by this stub shaft. Due to the meshing of the bevel gear 24 with the bevel gear portion 18 of the fan blade hub l2, this movement of the carriage in a forward direction will cause the fan blades 13 to'rotate for creating a breeze or draft within the carriage top and body 6 and 5 respectively.

If the carriage is moved rearwardly the friction wheel 39 will be rotated in the opposite direction for causing the clutch elements 37 and 38 to become disengaged by the movement of the wheel hub 38 longitudinally of the stub shaft 32 against the tension of the spring 41.

When the operator of the carriage does not desire to have the fan in operation, downward movement upon the operating handle 51 of the cam 52 will cause the plunger 44 to be moved longitudinally outwardly of the cylinder 45 for elevating the tread of the friction wheel 39 off of the tread of the ground engaging wheel 29. The carriage may then be moved in either direction without causing rotation of the friction wheel 39.V

It isto be understood that the form of this invention herewith shown and described is to be taken `as the preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described the invention, I claim 1. In a device of the type described, the combination with a wheeled carriage, of a fan mounted thereon including a series of blades carried by a hub, and a gear formed integrally with the hub; a flexible shaft, a gear connected to one end of the flexible t shaft and meshing with the gear part of the fan hub, a friction wheel connected to the other end of the flexible shaft, a su port for the friction wheel including a tubular member vertically supported on an axle of the carriage, downwardly tensioned rod slidable in the tubular member and supporting the friction wheel at its up er end, and means for selectively moving tie tread of the traction wheel into and out of engagement with the tread of one of the ground-engaging wheels of the carriage.

2. In a device of the type described, the combination with a wheeled carriage, of a fan mounted thereon including a series of blades carried by a hub, and a gear formed integrally with the hub; a flexible shaft, a gear connected to one end of the flexible shaft and meshing with the gear part of the fan hub, a friction wheel connected to the other end of the flexible shaft, a support for the friction wheel including a tubular member vertically supported on an axle of the carriage, a downwardly tensioned rod slidable in the tubular member and su porting the friction wheel at its upper end, and a cam lever pivoted in the side of the tubular member engaging the lower end of the tensioned rod for selectively moving and holding the tread of the friction Wheel into and out of engagement with the tread of one of the ground engaging wheels carried by said axle.

3. In a device of the type described,-the combination with a wheeled carriage, of a fan mounted thereon including a series of blades carried by a hub, and a Gear formed integrally with the hub; a flexible shaft, a gear connected to one end of the flexible shaft and meshingwith the gear part of the fan hub7 a friction wheel connected to the other end of the flexible shaft, and means adjustahly carried by an axle of the carringe for selectively moving and holding the tread of the friction wheel into and out of engagement with the tread of one of the ground engaging wheels carried by said axle7 said last mentioned means including a telescopic support, resilient means for drawing the inner telescoping member inwardly of the outer member, and means for manually moving the inner telescoping member outwardly of the outer member.

In testimony whereof I affix my signature.

STEVE HALMI. 

